Affiliation:
1. Guizhou University
2. Northeastern University
Abstract
It is well known that piezoelectric ceramics are wildly used in many fields such as electrical sensors, actuators, alarm equipments etc. In this paper，the microstructure and the piezoelectric properties of Pb（Zr1/2Ti1/2）1-x（Nb2/3Mg1/3）xO3 (PMNZT) were studied. A novel B-site precursor method was adopted for preparing of Pb（Zr1/2Ti1/2）1-x（Nb2/3Mg1/3）xO3 samples. For investigating the crystallographic phase and microstructure of the samples, X-ray diffraction(XRD) and scanning electron microscopy(SEM) methods have been adopted respectively. The results show that a pure perovskite structure can be obtained after sintering at 1220°C for 2h. Through this experiment, it has been found that when sintering at 1220°C for 2h and the amounts of the Pbx（Nb2/3Mg1/3）xO3 (PMN) is 0.14, the Pb（Zr1/2Ti1/2）1-x（Nb2/3Mg1/3）xO3 samples are with the best electrical properties as follows: dielectric constant (ε) is 1858, dielectric loss(tanδ) is 0.017, electromechanical coupling coefficient (Kp) is 0.515, piezoelectric constant(d33) is 362PC/N
Publisher
Trans Tech Publications, Ltd.
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